Annotation of src/usr.bin/ftp/fetch.c, Revision 1.41
1.41 ! deraadt 1: /* $OpenBSD: fetch.c,v 1.40 2002/11/08 03:30:17 fgsch Exp $ */
1.15 millert 2: /* $NetBSD: fetch.c,v 1.14 1997/08/18 10:20:20 lukem Exp $ */
1.1 millert 3:
4: /*-
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Jason Thorpe and Luke Mewburn.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.15 millert 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1 millert 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #ifndef lint
1.41 ! deraadt 41: static char rcsid[] = "$OpenBSD: fetch.c,v 1.40 2002/11/08 03:30:17 fgsch Exp $";
1.1 millert 42: #endif /* not lint */
43:
44: /*
45: * FTP User Program -- Command line file retrieval
46: */
47:
48: #include <sys/types.h>
49: #include <sys/param.h>
50: #include <sys/socket.h>
1.22 deraadt 51: #include <sys/stat.h>
1.1 millert 52:
53: #include <netinet/in.h>
54:
55: #include <arpa/ftp.h>
56: #include <arpa/inet.h>
57:
58: #include <ctype.h>
59: #include <err.h>
1.17 millert 60: #include <libgen.h>
1.1 millert 61: #include <netdb.h>
62: #include <fcntl.h>
1.3 millert 63: #include <signal.h>
1.1 millert 64: #include <stdio.h>
1.19 deraadt 65: #include <errno.h>
1.1 millert 66: #include <stdlib.h>
67: #include <string.h>
68: #include <unistd.h>
1.40 fgsch 69: #include <util.h>
1.1 millert 70:
71: #include "ftp_var.h"
72:
1.38 millert 73: static int url_get(const char *, const char *, const char *);
74: void aborthttp(int);
75: void abortfile(int);
76: char hextochar(const char *);
77: char *urldecode(const char *);
1.14 millert 78:
1.1 millert 79: #define FTP_URL "ftp://" /* ftp URL prefix */
80: #define HTTP_URL "http://" /* http URL prefix */
1.22 deraadt 81: #define FILE_URL "file:" /* file URL prefix */
1.6 millert 82: #define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */
1.1 millert 83: #define HTTP_PROXY "http_proxy" /* env var with http proxy location */
84:
85:
86: #define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0'))
87:
1.37 heko 88: static const char *at_encoding_warning =
89: "Extra `@' characters in usernames and passwords should be encoded as %%40";
90:
1.1 millert 91: jmp_buf httpabort;
92:
93: /*
1.6 millert 94: * Retrieve URL, via the proxy in $proxyvar if necessary.
1.1 millert 95: * Modifies the string argument given.
96: * Returns -1 on failure, 0 on success
97: */
1.14 millert 98: static int
1.17 millert 99: url_get(origline, proxyenv, outfile)
1.14 millert 100: const char *origline;
101: const char *proxyenv;
1.17 millert 102: const char *outfile;
1.1 millert 103: {
1.25 itojun 104: struct addrinfo hints, *res0, *res;
105: int error;
1.40 fgsch 106: int i, isftpurl, isfileurl, isredirect;
1.34 millert 107: volatile int s, out;
1.14 millert 108: size_t len;
1.40 fgsch 109: char *cp, *ep, *portnum, *path;
1.29 itojun 110: char pbuf[NI_MAXSERV];
1.34 millert 111: const char * volatile savefile;
1.40 fgsch 112: char *line, *host, *port, *buf;
1.34 millert 113: char * volatile proxy;
1.28 itojun 114: char *hosttail;
1.14 millert 115: volatile sig_t oldintr;
1.1 millert 116: off_t hashbytes;
1.25 itojun 117: char *cause = "unknown";
1.40 fgsch 118: FILE *fin;
119: int rval;
1.1 millert 120:
121: s = -1;
122: proxy = NULL;
1.40 fgsch 123: fin = NULL;
124: buf = NULL;
1.14 millert 125: isftpurl = 0;
1.22 deraadt 126: isfileurl = 0;
1.40 fgsch 127: isredirect = 0;
128: rval = -1;
1.14 millert 129:
130: line = strdup(origline);
131: if (line == NULL)
132: errx(1, "Can't allocate memory to parse URL");
1.7 millert 133: if (strncasecmp(line, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
1.6 millert 134: host = line + sizeof(HTTP_URL) - 1;
1.14 millert 135: else if (strncasecmp(line, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.6 millert 136: host = line + sizeof(FTP_URL) - 1;
1.14 millert 137: isftpurl = 1;
1.22 deraadt 138: } else if (strncasecmp(line, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
139: host = line + sizeof(FILE_URL) - 1;
140: isfileurl = 1;
1.14 millert 141: } else
142: errx(1, "url_get: Invalid URL '%s'", line);
1.6 millert 143:
1.22 deraadt 144: if (isfileurl) {
145: path = host;
146: } else {
147: path = strchr(host, '/'); /* find path */
148: if (EMPTYSTRING(path)) {
149: if (isftpurl)
150: goto noftpautologin;
151: warnx("Invalid URL (no `/' after host): %s", origline);
152: goto cleanup_url_get;
153: }
154: *path++ = '\0';
155: if (EMPTYSTRING(path)) {
156: if (isftpurl)
157: goto noftpautologin;
158: warnx("Invalid URL (no file after host): %s", origline);
159: goto cleanup_url_get;
160: }
1.14 millert 161: }
1.1 millert 162:
1.17 millert 163: if (outfile)
164: savefile = outfile;
1.1 millert 165: else
1.17 millert 166: savefile = basename(path);
167:
1.14 millert 168: if (EMPTYSTRING(savefile)) {
169: if (isftpurl)
170: goto noftpautologin;
171: warnx("Invalid URL (no file after directory): %s", origline);
1.6 millert 172: goto cleanup_url_get;
1.14 millert 173: }
1.1 millert 174:
175: if (proxyenv != NULL) { /* use proxy */
176: proxy = strdup(proxyenv);
177: if (proxy == NULL)
1.14 millert 178: errx(1, "Can't allocate memory for proxy URL.");
1.7 millert 179: if (strncasecmp(proxy, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
1.6 millert 180: host = proxy + sizeof(HTTP_URL) - 1;
1.7 millert 181: else if (strncasecmp(proxy, FTP_URL, sizeof(FTP_URL) - 1) == 0)
1.6 millert 182: host = proxy + sizeof(FTP_URL) - 1;
183: else {
1.14 millert 184: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 185: goto cleanup_url_get;
186: }
1.14 millert 187: if (EMPTYSTRING(host)) {
188: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 189: goto cleanup_url_get;
1.14 millert 190: }
1.1 millert 191: *--path = '/'; /* add / back to real path */
192: path = strchr(host, '/'); /* remove trailing / on host */
193: if (! EMPTYSTRING(path))
194: *path++ = '\0';
195: path = line;
196: }
197:
1.22 deraadt 198: if (isfileurl) {
199: struct stat st;
200:
201: s = open(path, O_RDONLY);
202: if (s == -1) {
203: warn("Can't open file %s", path);
204: goto cleanup_url_get;
205: }
206:
207: if (fstat(s, &st) == -1)
208: filesize = -1;
209: else
210: filesize = st.st_size;
211:
212: /* Open the output file. */
213: if (strcmp(savefile, "-") != 0) {
214: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC, 0666);
215: if (out < 0) {
216: warn("Can't open %s", savefile);
217: goto cleanup_url_get;
218: }
219: } else
220: out = fileno(stdout);
221:
222: /* Trap signals */
223: oldintr = NULL;
224: if (setjmp(httpabort)) {
225: if (oldintr)
226: (void)signal(SIGINT, oldintr);
227: goto cleanup_url_get;
228: }
229: oldintr = signal(SIGINT, abortfile);
230:
231: bytes = 0;
232: hashbytes = mark;
233: progressmeter(-1);
1.40 fgsch 234:
235: if ((buf = malloc(4096)) == NULL)
236: errx(1, "Can't allocate memory for transfer buffer\n");
1.22 deraadt 237:
238: /* Finally, suck down the file. */
239: i = 0;
1.40 fgsch 240: while ((len = read(s, buf, 4096)) > 0) {
1.22 deraadt 241: bytes += len;
242: for (cp = buf; len > 0; len -= i, cp += i) {
243: if ((i = write(out, cp, len)) == -1) {
244: warn("Writing %s", savefile);
245: goto cleanup_url_get;
246: }
247: else if (i == 0)
248: break;
249: }
250: if (hash && !progress) {
251: while (bytes >= hashbytes) {
252: (void)putc('#', ttyout);
253: hashbytes += mark;
254: }
255: (void)fflush(ttyout);
256: }
257: }
258: if (hash && !progress && bytes > 0) {
259: if (bytes < mark)
260: (void)putc('#', ttyout);
261: (void)putc('\n', ttyout);
262: (void)fflush(ttyout);
263: }
264: if (len != 0) {
265: warn("Reading from file");
266: goto cleanup_url_get;
267: }
268: progressmeter(1);
269: if (verbose)
270: fputs("Successfully retrieved file.\n", ttyout);
271: (void)signal(SIGINT, oldintr);
272:
1.40 fgsch 273: rval = 0;
274: goto cleanup_url_get;
1.22 deraadt 275: }
276:
1.28 itojun 277: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
278: (hosttail[1] == '\0' || hosttail[1] == ':')) {
279: host++;
280: *hosttail++ = '\0';
281: } else
282: hosttail = host;
283:
284: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 285: if (portnum != NULL)
286: *portnum++ = '\0';
287:
288: if (debug)
1.10 deraadt 289: fprintf(ttyout, "host %s, port %s, path %s, save as %s.\n",
1.1 millert 290: host, portnum, path, savefile);
291:
1.25 itojun 292: memset(&hints, 0, sizeof(hints));
1.39 deraadt 293: hints.ai_family = family;
1.25 itojun 294: hints.ai_socktype = SOCK_STREAM;
295: port = portnum ? portnum : httpport;
296: error = getaddrinfo(host, port, &hints, &res0);
1.30 deraadt 297: if (error == EAI_SERVICE && port == httpport) {
298: /*
299: * If the services file is corrupt/missing, fall back
300: * on our hard-coded defines.
301: */
302: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
303: error = getaddrinfo(host, pbuf, &hints, &res0);
304: }
1.25 itojun 305: if (error) {
306: warnx("%s: %s", gai_strerror(error), host);
307: goto cleanup_url_get;
1.1 millert 308: }
309:
1.25 itojun 310: s = -1;
311: for (res = res0; res; res = res->ai_next) {
1.40 fgsch 312: getnameinfo(res->ai_addr, res->ai_addrlen, pbuf, sizeof(pbuf),
1.41 ! deraadt 313: NULL, 0, NI_NUMERICHOST);
! 314: if (verbose)
! 315: fprintf(ttyout, "Trying %s...\n", pbuf);
1.14 millert 316:
1.25 itojun 317: s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
318: if (s == -1) {
319: cause = "socket";
320: continue;
1.1 millert 321: }
322:
1.25 itojun 323: again:
324: if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
325: if (errno == EINTR)
326: goto again;
327: close(s);
328: s = -1;
329: cause = "connect";
1.19 deraadt 330: continue;
331: }
1.25 itojun 332:
1.29 itojun 333: /* get port in numeric */
334: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
335: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
336: port = pbuf;
337: else
338: port = NULL;
339:
1.25 itojun 340: break;
341: }
342: freeaddrinfo(res0);
343: if (s < 0) {
1.33 millert 344: warn("%s", cause);
1.6 millert 345: goto cleanup_url_get;
1.1 millert 346: }
347:
1.40 fgsch 348: fin = fdopen(s, "r+");
349:
1.1 millert 350: /*
1.40 fgsch 351: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 352: */
1.32 itojun 353: if (proxy) {
354: /*
355: * Host: directive must use the destination host address for
356: * the original URI (path). We do not attach it at this moment.
357: */
358: if (verbose)
1.23 deraadt 359: fprintf(ttyout, "Requesting %s (via %s)\n",
360: origline, proxyenv);
1.40 fgsch 361: fprintf(fin, "GET %s HTTP/1.0\r\n%s\r\n\r\n", path, HTTP_USER_AGENT);
1.28 itojun 362: } else {
1.32 itojun 363: if (verbose)
364: fprintf(ttyout, "Requesting %s\n", origline);
365: if (strchr(host, ':')) {
366: char *h, *p;
367:
368: /* strip off scoped address portion, since it's local to node */
369: h = strdup(host);
370: if (h == NULL)
371: errx(1, "Can't allocate memory.");
372: if ((p = strchr(h, '%')) != NULL)
373: *p = '\0';
1.35 heko 374: /*
375: * Send port number only if it's specified and does not equal
376: * 80. Some broken HTTP servers get confused if you explicitly
377: * send them the port number.
378: */
379: if (port && strcmp(port, "80") != 0)
1.40 fgsch 380: fprintf(fin, "GET /%s HTTP/1.0\r\nHost: [%s]:%s\r\n%s\r\n\r\n",
1.36 heko 381: path, h, port, HTTP_USER_AGENT);
1.35 heko 382: else
1.40 fgsch 383: fprintf(fin, "GET /%s HTTP/1.0\r\nHost: [%s]\r\n%s\r\n\r\n",
1.36 heko 384: path, h, HTTP_USER_AGENT);
1.32 itojun 385: free(h);
386: } else {
1.35 heko 387: if (port && strcmp(port, "80") != 0)
1.40 fgsch 388: fprintf(fin, "GET /%s HTTP/1.0\r\nHost: %s:%s\r\n%s\r\n\r\n",
1.36 heko 389: path, host, port, HTTP_USER_AGENT);
1.35 heko 390: else
1.40 fgsch 391: fprintf(fin, "GET /%s HTTP/1.0\r\nHost: %s\r\n%s\r\n\r\n",
1.36 heko 392: path, host, HTTP_USER_AGENT);
1.32 itojun 393: }
1.28 itojun 394: }
1.40 fgsch 395: if (fflush(fin) == EOF) {
1.14 millert 396: warn("Writing HTTP request");
1.6 millert 397: goto cleanup_url_get;
1.1 millert 398: }
1.40 fgsch 399:
400: if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) == NULL) {
401: warn("Receiving HTTP reply");
402: goto cleanup_url_get;
1.1 millert 403: }
1.40 fgsch 404:
405: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
406: buf[--len] = '\0';
407: if (debug)
408: fprintf(ttyout, "received '%s'\n", buf);
409:
1.1 millert 410: cp = strchr(buf, ' ');
411: if (cp == NULL)
412: goto improper;
413: else
414: cp++;
1.40 fgsch 415: if (strncmp(cp, "301", 3) == 0 || strncmp(cp, "302", 3) == 0) {
416: isredirect++;
417: } else if (strncmp(cp, "200", 3)) {
1.1 millert 418: warnx("Error retrieving file: %s", cp);
1.6 millert 419: goto cleanup_url_get;
1.1 millert 420: }
421:
422: /*
423: * Read the rest of the header.
424: */
1.40 fgsch 425: free(buf);
426: filesize = -1;
427:
428: while (1) {
429: if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) == NULL) {
430: warn("Receiving HTTP reply");
431: goto cleanup_url_get;
432: }
433: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
434: buf[--len] = '\0';
435: if (len == 0)
1.1 millert 436: break;
1.40 fgsch 437: if (debug)
438: fprintf(ttyout, "received '%s'\n", buf);
1.1 millert 439:
1.40 fgsch 440: /* Look for some headers */
441: cp = buf;
1.1 millert 442: #define CONTENTLEN "Content-Length: "
1.40 fgsch 443: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
444: cp += sizeof(CONTENTLEN) - 1;
445: filesize = strtol(cp, &ep, 10);
446: if (filesize < 1 || *ep != '\0')
447: goto improper;
448: #define LOCATION "Location: "
449: } else if (isredirect &&
450: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
451: cp += sizeof(LOCATION) - 1;
452: if (verbose)
453: fprintf(ttyout, "Redirected to %s\n", cp);
454: if (fin != NULL)
455: fclose(fin);
456: else if (s != -1)
457: close(s);
458: if (proxy)
459: free(proxy);
460: free(line);
461: rval = url_get(cp, proxyenv, outfile);
462: if (buf)
463: free(buf);
464: return (rval);
465: }
1.1 millert 466: }
1.40 fgsch 467: free(buf);
1.1 millert 468:
1.17 millert 469: /* Open the output file. */
470: if (strcmp(savefile, "-") != 0) {
1.10 deraadt 471: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC, 0666);
472: if (out < 0) {
473: warn("Can't open %s", savefile);
474: goto cleanup_url_get;
475: }
476: } else
1.17 millert 477: out = fileno(stdout);
1.1 millert 478:
479: /* Trap signals */
480: oldintr = NULL;
481: if (setjmp(httpabort)) {
482: if (oldintr)
1.2 millert 483: (void)signal(SIGINT, oldintr);
1.6 millert 484: goto cleanup_url_get;
1.1 millert 485: }
486: oldintr = signal(SIGINT, aborthttp);
487:
488: bytes = 0;
489: hashbytes = mark;
490: progressmeter(-1);
491:
492: /* Finally, suck down the file. */
1.40 fgsch 493: if ((buf = malloc(4096)) == NULL)
494: errx(1, "Can't allocate memory for transfer buffer\n");
1.1 millert 495: i = 0;
1.40 fgsch 496: while ((len = fread(buf, sizeof(char), 4096, fin)) > 0) {
1.1 millert 497: bytes += len;
498: for (cp = buf; len > 0; len -= i, cp += i) {
499: if ((i = write(out, cp, len)) == -1) {
500: warn("Writing %s", savefile);
1.6 millert 501: goto cleanup_url_get;
1.1 millert 502: }
503: else if (i == 0)
504: break;
505: }
506: if (hash && !progress) {
507: while (bytes >= hashbytes) {
1.10 deraadt 508: (void)putc('#', ttyout);
1.1 millert 509: hashbytes += mark;
510: }
1.10 deraadt 511: (void)fflush(ttyout);
1.1 millert 512: }
513: }
514: if (hash && !progress && bytes > 0) {
515: if (bytes < mark)
1.10 deraadt 516: (void)putc('#', ttyout);
517: (void)putc('\n', ttyout);
518: (void)fflush(ttyout);
1.1 millert 519: }
520: if (len != 0) {
521: warn("Reading from socket");
1.6 millert 522: goto cleanup_url_get;
1.1 millert 523: }
524: progressmeter(1);
1.24 deraadt 525: if (filesize != -1 && len == 0 && bytes != filesize) {
526: if (verbose)
527: fputs("Read short file.\n", ttyout);
528: goto cleanup_url_get;
529: }
530:
1.1 millert 531: if (verbose)
1.10 deraadt 532: fputs("Successfully retrieved file.\n", ttyout);
1.2 millert 533: (void)signal(SIGINT, oldintr);
1.1 millert 534:
1.40 fgsch 535: rval = 0;
536: goto cleanup_url_get;
1.1 millert 537:
1.14 millert 538: noftpautologin:
539: warnx(
540: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
541: goto cleanup_url_get;
542:
1.1 millert 543: improper:
1.8 millert 544: warnx("Improper response from %s", host);
1.14 millert 545:
1.6 millert 546: cleanup_url_get:
1.40 fgsch 547: if (fin != NULL)
548: fclose(fin);
549: else if (s != -1)
1.1 millert 550: close(s);
1.40 fgsch 551: if (buf)
552: free(buf);
1.1 millert 553: if (proxy)
554: free(proxy);
1.14 millert 555: free(line);
1.40 fgsch 556: return (rval);
1.1 millert 557: }
558:
559: /*
560: * Abort a http retrieval
561: */
562: void
1.3 millert 563: aborthttp(notused)
564: int notused;
1.1 millert 565: {
566:
567: alarmtimer(0);
1.10 deraadt 568: fputs("\nhttp fetch aborted.\n", ttyout);
569: (void)fflush(ttyout);
1.1 millert 570: longjmp(httpabort, 1);
571: }
572:
573: /*
1.22 deraadt 574: * Abort a http retrieval
575: */
576: void
577: abortfile(notused)
578: int notused;
579: {
580:
581: alarmtimer(0);
582: fputs("\nfile fetch aborted.\n", ttyout);
583: (void)fflush(ttyout);
584: longjmp(httpabort, 1);
585: }
586:
587: /*
1.1 millert 588: * Retrieve multiple files from the command line, transferring
589: * files of the form "host:path", "ftp://host/path" using the
590: * ftp protocol, and files of the form "http://host/path" using
591: * the http protocol.
1.2 millert 592: * If path has a trailing "/", then return (-1);
1.1 millert 593: * the path will be cd-ed into and the connection remains open,
594: * and the function will return -1 (to indicate the connection
595: * is alive).
596: * If an error occurs the return value will be the offset+1 in
597: * argv[] of the file that caused a problem (i.e, argv[x]
598: * returns x+1)
599: * Otherwise, 0 is returned if all files retrieved successfully.
600: */
601: int
1.17 millert 602: auto_fetch(argc, argv, outfile)
1.1 millert 603: int argc;
604: char *argv[];
1.17 millert 605: char *outfile;
1.1 millert 606: {
607: static char lasthost[MAXHOSTNAMELEN];
608: char *xargv[5];
609: char *cp, *line, *host, *dir, *file, *portnum;
1.8 millert 610: char *user, *pass;
1.6 millert 611: char *ftpproxy, *httpproxy;
1.14 millert 612: int rval, xargc;
613: volatile int argpos;
1.4 millert 614: int dirhasglob, filehasglob;
1.14 millert 615: char rempath[MAXPATHLEN];
1.1 millert 616:
617: argpos = 0;
618:
619: if (setjmp(toplevel)) {
620: if (connected)
621: disconnect(0, NULL);
1.2 millert 622: return (argpos + 1);
1.1 millert 623: }
1.3 millert 624: (void)signal(SIGINT, (sig_t)intr);
625: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 626:
1.6 millert 627: ftpproxy = getenv(FTP_PROXY);
628: httpproxy = getenv(HTTP_PROXY);
629:
1.1 millert 630: /*
631: * Loop through as long as there's files to fetch.
632: */
633: for (rval = 0; (rval == 0) && (argpos < argc); free(line), argpos++) {
634: if (strchr(argv[argpos], ':') == NULL)
635: break;
1.8 millert 636: host = dir = file = portnum = user = pass = NULL;
1.1 millert 637:
638: /*
639: * We muck with the string, so we make a copy.
640: */
641: line = strdup(argv[argpos]);
642: if (line == NULL)
643: errx(1, "Can't allocate memory for auto-fetch.");
644:
645: /*
646: * Try HTTP URL-style arguments first.
647: */
1.22 deraadt 648: if (strncasecmp(line, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
649: strncasecmp(line, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.17 millert 650: if (url_get(line, httpproxy, outfile) == -1)
1.1 millert 651: rval = argpos + 1;
652: continue;
653: }
654:
655: /*
1.6 millert 656: * Try FTP URL-style arguments next. If ftpproxy is
657: * set, use url_get() instead of standard ftp.
658: * Finally, try host:file.
1.1 millert 659: */
660: host = line;
1.7 millert 661: if (strncasecmp(line, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 662: char *passend, *passagain, *userend;
1.31 itojun 663:
1.6 millert 664: if (ftpproxy) {
1.17 millert 665: if (url_get(line, ftpproxy, outfile) == -1)
1.6 millert 666: rval = argpos + 1;
667: continue;
668: }
1.1 millert 669: host += sizeof(FTP_URL) - 1;
1.8 millert 670: dir = strchr(host, '/');
1.1 millert 671:
1.8 millert 672: /* Look for [user:pass@]host[:port] */
1.31 itojun 673:
674: /* check if we have "user:pass@" */
1.37 heko 675: userend = strchr(host, ':');
1.31 itojun 676: passend = strchr(host, '@');
677: if (passend && userend && userend < passend &&
678: (!dir || passend < dir)) {
679: user = host;
680: pass = userend + 1;
681: host = passend + 1;
682: *userend = *passend = '\0';
1.37 heko 683: passagain = strchr(host, '@');
684: if (strchr(pass, '@') != NULL ||
685: (passagain != NULL && passagain < dir)) {
686: warnx(at_encoding_warning);
687: goto bad_ftp_url;
688: }
1.31 itojun 689:
690: if (EMPTYSTRING(user) || EMPTYSTRING(pass)) {
1.11 millert 691: bad_ftp_url:
1.31 itojun 692: warnx("Invalid URL: %s", argv[argpos]);
693: rval = argpos + 1;
694: continue;
695: }
1.37 heko 696: user = urldecode(user);
697: pass = urldecode(pass);
1.8 millert 698: }
1.31 itojun 699:
700: #ifdef INET6
701: /* check [host]:port, or [host] */
702: if (host[0] == '[') {
703: cp = strchr(host, ']');
704: if (cp && (!dir || cp < dir)) {
705: if (cp + 1 == dir || cp[1] == ':') {
706: host++;
707: *cp++ = '\0';
708: } else
709: cp = NULL;
710: } else
711: cp = host;
1.25 itojun 712: } else
713: cp = host;
1.31 itojun 714: #else
715: cp = host;
1.25 itojun 716: #endif
1.31 itojun 717:
718: /* split off host[:port] if there is */
719: if (cp) {
720: portnum = strchr(cp, ':');
721: if (!portnum)
722: ;
723: else {
724: if (!dir)
725: ;
726: else if (portnum + 1 < dir) {
727: *portnum++ = '\0';
728: /*
729: * XXX should check if portnum
730: * is decimal number
731: */
732: } else {
733: /* empty portnum */
734: goto bad_ftp_url;
735: }
736: }
737: } else
738: portnum = NULL;
1.8 millert 739: } else { /* classic style `host:file' */
740: dir = strchr(host, ':');
741: }
1.1 millert 742: if (EMPTYSTRING(host)) {
743: rval = argpos + 1;
744: continue;
745: }
746:
747: /*
1.9 millert 748: * If dir is NULL, the file wasn't specified
1.1 millert 749: * (URL looked something like ftp://host)
750: */
1.8 millert 751: if (dir != NULL)
752: *dir++ = '\0';
1.1 millert 753:
754: /*
755: * Extract the file and (if present) directory name.
756: */
757: if (! EMPTYSTRING(dir)) {
1.8 millert 758: cp = strrchr(dir, '/');
1.1 millert 759: if (cp != NULL) {
760: *cp++ = '\0';
761: file = cp;
762: } else {
763: file = dir;
764: dir = NULL;
765: }
766: }
767: if (debug)
1.10 deraadt 768: fprintf(ttyout, "user %s:%s host %s port %s dir %s file %s\n",
1.8 millert 769: user, pass, host, portnum, dir, file);
1.1 millert 770:
771: /*
772: * Set up the connection if we don't have one.
773: */
774: if (strcmp(host, lasthost) != 0) {
1.8 millert 775: int oautologin;
776:
1.5 millert 777: (void)strcpy(lasthost, host);
1.1 millert 778: if (connected)
779: disconnect(0, NULL);
780: xargv[0] = __progname;
781: xargv[1] = host;
782: xargv[2] = NULL;
783: xargc = 2;
1.8 millert 784: if (! EMPTYSTRING(portnum)) {
1.1 millert 785: xargv[2] = portnum;
786: xargv[3] = NULL;
787: xargc = 3;
788: }
1.8 millert 789: oautologin = autologin;
790: if (user != NULL)
791: autologin = 0;
1.1 millert 792: setpeer(xargc, xargv);
1.8 millert 793: autologin = oautologin;
794: if ((connected == 0) ||
1.40 fgsch 795: ((connected == 1) && !ftp_login(host, user, pass))) {
1.8 millert 796: warnx("Can't connect or login to host `%s'",
797: host);
1.1 millert 798: rval = argpos + 1;
799: continue;
800: }
801:
802: /* Always use binary transfers. */
803: setbinary(0, NULL);
804: }
1.8 millert 805: /* cd back to '/' */
806: xargv[0] = "cd";
807: xargv[1] = "/";
808: xargv[2] = NULL;
809: cd(2, xargv);
810: if (! dirchange) {
811: rval = argpos + 1;
812: continue;
1.1 millert 813: }
814:
1.4 millert 815: dirhasglob = filehasglob = 0;
816: if (doglob) {
817: if (! EMPTYSTRING(dir) &&
818: strpbrk(dir, "*?[]{}") != NULL)
819: dirhasglob = 1;
820: if (! EMPTYSTRING(file) &&
821: strpbrk(file, "*?[]{}") != NULL)
822: filehasglob = 1;
823: }
824:
1.1 millert 825: /* Change directories, if necessary. */
1.4 millert 826: if (! EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 827: xargv[0] = "cd";
828: xargv[1] = dir;
829: xargv[2] = NULL;
830: cd(2, xargv);
831: if (! dirchange) {
832: rval = argpos + 1;
833: continue;
834: }
835: }
836:
837: if (EMPTYSTRING(file)) {
838: rval = -1;
839: continue;
840: }
841:
1.21 marc 842: if (verbose)
1.10 deraadt 843: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 844:
1.4 millert 845: if (dirhasglob) {
846: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
847: file = rempath;
848: }
849:
850: /* Fetch the file(s). */
1.10 deraadt 851: xargc = 2;
1.1 millert 852: xargv[0] = "get";
853: xargv[1] = file;
854: xargv[2] = NULL;
1.4 millert 855: if (dirhasglob || filehasglob) {
856: int ointeractive;
857:
858: ointeractive = interactive;
859: interactive = 0;
860: xargv[0] = "mget";
1.10 deraadt 861: mget(xargc, xargv);
1.5 millert 862: interactive = ointeractive;
1.10 deraadt 863: } else {
1.17 millert 864: if (outfile != NULL) {
865: xargv[2] = outfile;
866: xargv[3] = NULL;
1.10 deraadt 867: xargc++;
868: }
869: get(xargc, xargv);
870: }
1.1 millert 871:
1.4 millert 872: if ((code / 100) != COMPLETE)
1.1 millert 873: rval = argpos + 1;
874: }
875: if (connected && rval != -1)
876: disconnect(0, NULL);
877: return (rval);
1.37 heko 878: }
879:
880: char *
881: urldecode(str)
882: const char *str;
883: {
884: char *ret;
885: char c;
886: int i, reallen;
887:
888: if (str == NULL)
889: return NULL;
890: if ((ret = malloc(strlen(str)+1)) == NULL)
891: err(1, "Can't allocate memory for URL decoding");
892: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
893: c = str[i];
894: if (c == '+') {
895: *ret = ' ';
896: continue;
897: }
898: /* Can't use strtol here because next char after %xx may be
899: * a digit. */
900: if (c == '%' && isxdigit(str[i+1]) && isxdigit(str[i+2])) {
901: *ret = hextochar(&str[i+1]);
902: i+=2;
903: continue;
904: }
905: *ret = c;
906: }
907: *ret = '\0';
908:
909: return ret-reallen;
910: }
911:
912: char
913: hextochar(str)
914: const char *str;
915: {
916: char c, ret;
917:
918: c = str[0];
919: ret = c;
920: if (isalpha(c))
921: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
922: else
923: ret -= '0';
924: ret *= 16;
925:
926: c = str[1];
927: ret += c;
928: if (isalpha(c))
929: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
930: else
931: ret -= '0';
932: return ret;
1.25 itojun 933: }
934:
935: int
936: isurl(p)
937: const char *p;
938: {
1.27 millert 939:
1.26 deraadt 940: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
941: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.27 millert 942: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
943: strstr(p, ":/"))
944: return (1);
945: return (0);
1.1 millert 946: }
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